Is there any MATLAB toolbox that can find the local MAX of a piece-wise multi-variable function?

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Niloufar Mirzavand Boroujeni
评论： Bruno Luong 2020-10-1
I have a piece-wise function f(x,y,z) which is not linear necessarily. Is there any toolbox that can find the local maximums of this function in MATLAB?
Thanks

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回答（2 个）

Gouri Chennuru
Gouri Chennuru 2020-9-25
Hi Niloufar,
You can use “islocalmin” function in order to find the local minima which returns a logical array whose elements are 1 (true) when a local minimum is detected in the corresponding element of an array, table, or timetable.
Similarly you can make use of “islocalmax” function in order to find the local maxima which returns a logical array whose elements are 1 (true) when a local maximum is detected in the corresponding element of an array, table, or timetable.
You can also use “findpeaks” returns a vector with the local maxima (peaks) of the input signal vector, data which is available in the signal processing toolbox.
Hope this Helps!
Bruno Luong
Bruno Luong 2020-9-25
fmincon and friends if you have the toolbox.
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Walter Roberson
Walter Roberson 2020-10-1
fmincon cannot handle discontinuities over the range it is testing.
You can, though, test one range at a time, if the boundaries of the ranges can reasonably be determined.

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